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/***************************************************************************
* Copyright (c) 2004 - 2008 Eike Stepper, Germany.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Eike Stepper - initial API and implementation
**************************************************************************/
package org.eclipse.emf.cdo.server.internal.db;
import org.eclipse.emf.cdo.internal.server.StoreAccessor;
import org.eclipse.emf.cdo.protocol.model.CDOClass;
import org.eclipse.emf.cdo.protocol.model.CDOPackage;
import org.eclipse.emf.cdo.server.ISession;
import org.eclipse.emf.cdo.server.IView;
import org.eclipse.emf.cdo.server.db.IClassMapping;
import org.eclipse.emf.cdo.server.db.IDBStoreAccessor;
import org.eclipse.emf.cdo.server.db.IMappingStrategy;
import org.eclipse.net4j.db.DBException;
import org.eclipse.net4j.db.DBUtil;
import org.eclipse.net4j.db.ddl.IDBTable;
import java.sql.Connection;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.HashSet;
import java.util.Set;
/**
* @author Eike Stepper
*/
public class DBStoreAccessor extends StoreAccessor implements IDBStoreAccessor
{
// private static final ContextTracer TRACER = new ContextTracer(OM.DEBUG, DBStoreAccessor.class);
private Connection connection;
private Statement statement;
protected DBStoreAccessor(DBStore store, ISession session) throws DBException
{
super(store, session);
initConnection();
}
protected DBStoreAccessor(DBStore store, IView view) throws DBException
{
super(store, view);
initConnection();
}
protected void initConnection()
{
try
{
connection = getStore().getDBConnectionProvider().getConnection();
connection.setAutoCommit(isReader());
}
catch (SQLException ex)
{
throw new DBException(ex);
}
}
@Override
protected void doRelease() throws DBException
{
DBUtil.close(statement);
DBUtil.close(connection);
}
@Override
public DBStore getStore()
{
return (DBStore)super.getStore();
}
public Connection getConnection()
{
return connection;
}
public Statement getStatement()
{
if (statement == null)
{
try
{
statement = getConnection().createStatement();
}
catch (SQLException ex)
{
throw new DBException(ex);
}
}
return statement;
}
/**
* TODO Move this somehow to DBAdapter
*/
protected Boolean getBoolean(Object value)
{
if (value == null)
{
return null;
}
if (value instanceof Boolean)
{
return (Boolean)value;
}
if (value instanceof Number)
{
return ((Number)value).intValue() != 0;
}
throw new IllegalArgumentException("Not a boolean value: " + value);
}
protected Set<IDBTable> mapPackages(CDOPackage... cdoPackages)
{
Set<IDBTable> affectedTables = new HashSet<IDBTable>();
if (cdoPackages != null && cdoPackages.length != 0)
{
for (CDOPackage cdoPackage : cdoPackages)
{
Set<IDBTable> tables = mapClasses(cdoPackage.getClasses());
affectedTables.addAll(tables);
}
}
return affectedTables;
}
protected Set<IDBTable> mapClasses(CDOClass... cdoClasses)
{
Set<IDBTable> affectedTables = new HashSet<IDBTable>();
if (cdoClasses != null && cdoClasses.length != 0)
{
IMappingStrategy mappingStrategy = getStore().getMappingStrategy();
for (CDOClass cdoClass : cdoClasses)
{
IClassMapping mapping = mappingStrategy.getClassMapping(cdoClass);
if (mapping != null)
{
affectedTables.addAll(mapping.getAffectedTables());
}
}
}
return affectedTables;
}
}
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